Last year dolomite extraction hit record high over the past 9 years2018-01-31
The Geological Survey of Lithuania under the Ministry of Environment assessed and summarised the dolomite extraction data in 2017 submitted by the companies engaged in the extraction of dolomite. Last year, dolomite extraction hit record high during the past nine years.
In 2017, 1,873 thsd. m3 of dolomite was extracted, i.e. almost 40 % more than in 2016 when a total of 1,344 thsd. m3 of this rock was extracted.
Dolomite is a carbonate, solid rock extracted only in open pits. Although dolomite is found in the sediments of many geological systems but only the Devon deposits that are closer to the surface of the earth in the northern part of Lithuania have a practical significance. All the explored dolomite deposits and prognostic areas are located in the districts of Pakruojis, Joniškis, Akmenė, Biržai and Rokiškis.
Eight companies have been granted permits to use dolomite resources, five of which are engaged in the extraction of dolomite. The largest amount of dolomite resources was found in the district of Pakruojis. It is mined at the second Petrašiūnai, Klovainiai and Krivaičiai deposits. In the district of Joniškis, the Skaistgiris dolomite deposit is exploited. The preparation of the Čedasai deposit located in the district of Rokiškis is nearing completion. The Narbučiai deposit located in the district of Akmenė and the Margiai and third Petrašiūnai deposits located in the district of Pakruojis have not been used yet.
The origin of dolomite is twofold: some dolomite was formed in lagoons after the crystals of dolomite had fallen out from supersaturated solutions, and some was formed of limestone in which calcium was replaced by magnesium. Pure dolomite is white, and the impurities of iron or manganese give a yellow, green or pink shade to it. It is used in the production of breakstone, cement, glass, mineral wool, mineral fertilizers, finishing, landscaping, etc.
Public Relations Division
31 January 2018